How to measure menstrual cup size for beginners?

Your Guide to Choosing the Perfect Fit

Menstrual cups are an amazing, eco-friendly alternative to pads and tampons. But when you’re new to menstrual cups, one of the biggest questions is: How do I know which size is right for me?

Choosing the correct cup size is key to comfort, leak protection, and ease of use. In this blog, we’ll walk you through how to measure your body to pick the right menstrual cup size and introduce you to common cup size options.

Why Size Matters

A cup that’s too big can be uncomfortable or hard to insert, while one that’s too small might leak or slip out. Your perfect fit depends on factors like your age, flow, childbirth history, and cervix height.

Step 1: Understand Common Menstrual Cup Sizes

Most brands offer two or three sizes typically based on flow and anatomy:

Size Typical Users Approximate Capacity
Small / Size 1 Under 30, no vaginal childbirth, light to medium flow ~20-25 ml
Medium / Size 2 Over 30 or vaginal childbirth, medium to heavy flow ~25-30 ml
Large / Size 3 Heavy flow or larger anatomy ~30+ ml

Note: Capacities vary slightly by brand.

Step 2: Consider Your Age and Childbirth History

  • Under 30 and no vaginal birth: Smaller or medium cups are usually best.

  • Over 30 or vaginal births: Medium or large cups are generally recommended to provide enough capacity and fit.

  • C-section only: You may still prefer a smaller or medium size.

Step 3: Measure Your Cervix Height

Your cervix position influences which cup size will be comfortable:

  • Low cervix: Choose a shorter cup or one with a trimmed stem.

  • High cervix: Longer cups are easier to reach and remove.

  • Medium cervix: Most standard cups work well.

How to measure cervix height:

  1. Wash your hands.

  2. Insert a clean finger into your vagina until you feel the cervix (it feels like a small round nub with a dimple in the middle).

  3. Note how far your finger goes before touching the cervix.

  • If it’s 2-3 inches or less, you likely have a low cervix.

  • 3-4 inches is medium.

  • More than 4 inches is high.

Step 4: Assess Your Flow

  • Light flow: Smaller cups hold less but are easier to insert.

  • Heavy flow: Larger cups have greater capacity, so you empty less frequently.

Step 5: Consider Other Factors

  • Pelvic floor strength: If you have strong pelvic muscles, a firmer cup can pop open easier.

  • Activity level: Active people might prefer a firmer cup that stays in place.

  • Personal comfort: Some cups have softer silicone or special shapes for extra comfort.

Popular Menstrual Cup Sizes from Youwei Trade

Cup Model Size Options Capacity (ml) Recommended For
Youwei Trade Basic Small (1), Medium (2) 20 / 30 Beginners, everyday use
Youwei Trade Pro Small, Medium, Large 20 / 30 / 35 Heavier flows, experienced users

Final Tips for Beginners

  • Start with the size most recommended for your age and childbirth history.

  • If unsure, choose a medium size — it suits many people.

  • Don’t worry if you need to try a couple of sizes to find the best fit.

  • Practice measuring cervix height monthly — it can change during your cycle.

Ready to Find Your Perfect Cup?

Choosing the right menstrual cup size makes all the difference for comfort and leak-free periods. With a little measuring and guidance, you’ll be well on your way to a sustainable, convenient period care routine!

Explore NYXCOLLECTION’s selection of menstrual cups here: https://nyxcollection.com/collections/period-cup

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